JP6446353B2 - Absorbent articles - Google Patents

Description

  The present invention relates to an absorbent article.

  As an absorbent article, for example, as disclosed in Patent Document 1, a diaper body in which a liquid absorber is enclosed between a liquid-permeable top sheet and a liquid-impervious back sheet, and a waist belt having an elastic body, are provided. A disposable diaper is known in which both ends of the waist belt in the longitudinal direction are joined to both ends of the diaper body in the longitudinal direction so as to be inclined from the center side in the width direction of the body toward the leg portions on both sides. In this disposable diaper, on both sides of the liquid-permeable surface sheet in the width direction, bag portions having inner edges facing each other of the liquid-impervious bag sheet are formed to suppress the side leakage of excrement.

JP-A-9-290003

  In the disposable diaper described above, the elastic body of the waist belt and the elastic body of the bag portion are opposed to each other at the inclined coupling portion and act in series. Therefore, when the waist belt is pulled up obliquely when the diaper is worn, the force concentrates on the inclined coupling portion rather than other portions of the waist belt, so that the bag portion is easily pulled obliquely upward. As a result, the bag portion spreads outward in the lateral direction and falls down, or the bag portion near the coupling portion rises unnecessarily and a gap is formed between the wearer's body. If it does so, a bag part cannot be closely stuck to a wearer and excrement cannot be dammed up by a bag part. Further, even when the diaper is worn, the bag portion is interlocked with the movement of the wearer around the waist, that is, the movement of the waist belt, and a gap is generated. Thus, the problem that the effect of the leakage suppression of excrement by a bag part (leak-proof wall part) cannot fully be acquired has arisen.

  This invention is made | formed in view of the above problems, and it aims at providing the absorbent article which a leak-proof wall part acts appropriately and suppresses the leakage of excrement.

A main invention for achieving the above object has a longitudinal direction, a lateral direction, and a front-rear direction, an absorbent main body along the longitudinal direction, a stretchable belt portion along the lateral direction, and a pair of An absorbent article having a leg opening,
The absorbent body has an absorbent core for absorbing liquid;
On both sides in the lateral direction of the absorbent main body, a pair of leak-proof wall portions standing from the skin side surface of the absorbent main body is provided,
A pair of joints that incline outward in the lateral direction from the upper side in the vertical direction toward each of the pair of leg openings, and join at least the absorbent main body, the belt part, and the leak-proof wall part. Parts are provided on the front and rear sides in the front-rear direction,
A pair of fixing portions for fixing the upper end portions in the vertical direction of the pair of leak-proof wall portions in a state where the upper end portions are inclined toward the skin side surface of the absorbent main body are provided on the front side and the rear side, respectively.
In the vertical direction and the horizontal direction, at least a part of the fixing portion overlaps the thickness direction of the absorbent core and the absorbent core ,
In the longitudinal direction, the lower end of the fixed part is located below the lower end of the joint part .
Other features of the present invention will become apparent from the description of the present specification and the accompanying drawings.

  ADVANTAGE OF THE INVENTION According to this invention, the leak-proof wall part acts appropriately and can provide the absorbent article which suppresses the leakage of excrement.

It is a schematic perspective view which shows the external appearance of a diaper. 2A is a plan view of the diaper in a state where the longitudinal direction of the absorbent main body and the belt portion are aligned and extended, and FIG. 2B is a cross-sectional view of the diaper in the state of FIG. 2A. FIG. 3A is a plan view of the diaper in an unfolded state during manufacture, and FIG. 3B is a cross-sectional view of the diaper in the state of FIG. 3A. It is explanatory drawing of the manufacturing method of a diaper. It is explanatory drawing of the manufacturing method of a diaper. It is explanatory drawing of the manufacturing method of a diaper. It is explanatory drawing of the manufacturing method of a diaper. It is explanatory drawing of the manufacturing method of a diaper. It is explanatory drawing of the fixing | fixed part of a leak-proof wall part, and a leg periphery elastic sheet.

At least the following matters will become apparent from the description of the present specification and the accompanying drawings.
An absorbent article having a longitudinal direction, a lateral direction, and a front-rear direction, and having an absorbent main body along the longitudinal direction, a stretchable belt portion along the lateral direction, and a pair of leg hole openings. The absorbent main body has an absorbent core that absorbs liquid, and a pair of leak-proof wall portions rising from the skin side surface of the absorbent main body on both lateral sides of the absorbent main body. And is inclined outwardly in the lateral direction from the upper side in the longitudinal direction toward each of the pair of leg openings, and at least the absorbent main body, the belt part, and the leak-proof wall part are joined. A pair of joint portions are provided on the front side and the rear side in the front-rear direction, respectively, and the upper end portions in the vertical direction of the pair of leak-proof wall portions are inclined toward the skin side surface of the absorbent main body A pair of fixing portions fixed at the front side and the rear side Respectively provided, in the longitudinal direction and the transverse direction, at least a portion of the fixing portion is an absorbent article, characterized in that overlaps the absorbent core and the thickness direction.
According to such an absorbent article, the leak-proof wall portion can act independently without receiving the force from the belt portion. For example, it is possible to prevent the leak-proof wall from collapsing or rising unnecessarily by interlocking with the belt part that is lifted obliquely upward when wearing, and to properly attach the leak-proof wall to the wearer. it can. Further, even during wearing, the leak-proof wall portion is unlikely to be interlocked with the movement of the wearer around the waist, that is, the movement of the belt portion, and an appropriate close contact state can be maintained. Therefore, leakage of excrement can be suppressed. In addition, the absorbent core has high rigidity and is not easily affected by the movement of the belt portion. Therefore, by overlapping the fixing portion and the absorbent core, the leak-proof wall portion can be more appropriately acted and the excrement leakage can be suppressed.

Such an absorbent article is characterized in that, in the longitudinal direction, the lower end of the fixed part is located below the lower end of the joint part.
According to such an absorbent article, since the force due to the extension of the belt portion is strongly applied to the joint portion, the leak-proof wall portion is fixed to a position below the lower end of the joint portion. Interlocking with the wall can be suppressed more reliably. Moreover, the generation | occurrence | production of the wrinkles by the standup of a leak-proof wall part can be prevented between a pair of junction parts, and it can prevent that the wrinkles produced between a pair of junction parts by the expansion / contraction of a belt part are promoted.

Such an absorbent article is characterized in that, in the longitudinal direction, the upper end of the fixed portion is located above the upper end of the absorbent core.
According to such an absorbent article, since the force due to the extension of the belt portion is strongly applied to the joint portion, by fixing the leak-proof wall portion to a higher position, the belt portion and the leak-proof wall portion are interlocked. Can be suppressed more reliably. Further, by fixing the leak-proof wall portion above the absorbent core, the rigidity of the region made of the sheet above the absorbent core is increased, and the generation of wrinkles generated between the pair of joint portions can be suppressed.

Such an absorbent article is characterized in that, in the longitudinal direction, the upper end of the fixed part reaches the joint part.
According to such an absorbent article, by fixing the leak-proof wall portion to a higher position, the interlocking between the belt portion and the leak-proof wall portion can be more reliably suppressed, and between the pair of joint portions. It is possible to suppress the occurrence of wrinkles.

In such an absorbent article, the inner end in the lateral direction of the fixing portion is located more outward in the lateral direction than the inner end in the lateral direction of the leak-proof wall portion. It is an article.
According to such an absorbent article, the leak-proof wall part can be smoothly erected from the part where the leak-proof wall part is fixed to the part where it is not fixed toward the lower side in the vertical direction. Therefore, since the leak-proof wall part becomes easy to stand up, the leak-proof wall part can act appropriately and the leakage of excrement can be suppressed.

In such an absorbent article, the leak-proof wall portion includes a thread-like elastic member that can expand and contract in the longitudinal direction thereof, and a leak-proof wall portion sheet, and the lateral direction of the leak-proof wall portion sheet. The side of the upright side is folded back to the skin side on the skin side surface of the absorbent main body, and has a lower layer portion and an upper layer portion, and the thread-like elastic member is provided in the upper layer portion. The fixing part is fixed in a state where the lower layer part is turned down toward the skin side surface of the absorbent main body, and the upper part is fixed in a state where the upper layer part is turned down toward the lower layer part. It is an absorbent article characterized by having 2 fixing | fixed parts.
According to such an absorbent article, a leak-proof wall part can act independently from a belt part, a leak-proof wall part is made to act appropriately, and the leakage of excrement can be suppressed.

In this absorbent article, the leak-proof wall portion includes a thread-like elastic member that can be stretched in the longitudinal direction thereof, and a sheet for the leak-proof wall portion, and the stretchability of the thread-like elastic member in the longitudinal direction. The absorbent article is characterized in that a portion that expresses the condition does not reach the joint.
According to such an absorbent article, the interlocking between the belt portion and the leakage preventing wall portion can be suppressed more reliably, and the leakage preventing wall portion can act independently from the belt portion.

A sheet-like elastic member according to the absorbent article, wherein a pair of leg gathers along the longitudinal direction is provided on both lateral sides of the absorbent main body, and along the periphery of the leg-hole opening. Is provided in the belt part and the leg gather part.
According to such an absorbent article, in the wearer's crotch part, the sheet-like elastic member is faced around the wearer's leg while linearly attaching the leak-proof wall part standing on the skin side to the wearer's body. Can be brought into close contact with each other so that the periphery of the leg opening can follow the movement of the leg. Therefore, the excrement leakage can be suppressed double.

In this absorbent article, the length of the sheet-like elastic member in the horizontal direction is longer on the upper side than on the lower side in the vertical direction.
According to such an absorbent article, in the part on the lower side in the vertical direction, that is, the part corresponding to the crotch part of the wearer, while supporting the leak-proof wall part with the sheet-like elastic member that adheres to the wearer on the surface, the sheet By reducing the width of the elastic member, the slack of the elastic member can be suppressed even at the crotch between the thighs. On the other hand, the upper part in the vertical direction hits the buttocks of the wearer who is likely to be depressed in the body. Therefore, by tightly adhering the wide sheet-like elastic member to the wearer, a gap is hardly generated, and excrement Leakage can be suppressed.

In such an absorbent article, the absorbent main body includes an absorbent body in which the absorbent core is covered with a core wrap sheet, and the leak-proof wall portion includes a thread-like elastic member that can expand and contract in the longitudinal direction thereof. The leakage prevention wall portion sheet, and the leakage prevention wall portion sheet is folded back to the skin side surface of the absorbent main body at the lateral side end of the absorption body, and the non-absorption of the absorption body. The part folded back to the skin side surface and folded back to the non-skin side surface of the absorber in the sheet for the leak-proof wall portion is formed on the non-skin side surface of the absorber along the longitudinal direction of the leak-proof wall portion. It is the absorbent article characterized by being fixed.
According to such an absorbent article, the portion of the leak-proof wall sheet folded back to the non-skin side surface of the absorber, that is, the portion serving as a standing fulcrum of the leak-proof wall is fixed to the highly rigid absorber. By doing so, it becomes difficult for a leak-proof wall part to interlock | cooperate with a motion of a wearer's leg. Therefore, the appropriate adhesion state of the leak-proof wall portion can be maintained, and excrement leakage can be suppressed.

  An embodiment will be described by taking a pants-type disposable diaper (hereinafter referred to as a diaper) as an example of an absorbent article.

=== Basic configuration of diaper 1 ===
FIG. 1 is a schematic perspective view showing the appearance of the diaper 1. 2A is a plan view of the diaper 1 in a state where the longitudinal directions of the absorbent main body 2 and the belt part 4 are aligned, and FIG. 2B is a cross-sectional view of the diaper 1 in the state of FIG. 2A. 3A is a plan view of the diaper 1 in a developed state during manufacture, and FIG. 3B is a cross-sectional view of the diaper 1 in the state of FIG. 3A.

  The diaper 1 becomes a pants-type shape as shown in FIG. 1 when worn. In the pants-type state, the diaper 1 has a “vertical direction”, a “horizontal direction”, and a “front-rear direction” that are orthogonal to each other. In addition, let the wearer's waistline side be the upper side (upper) in the vertical direction, and the wearer's inseam side be the lower side (lower). Moreover, a wearer's belly side is made into the front side (front) among the front-back directions, and a wearer's back side is made into the back side (back).

  The diaper 1 includes an absorbent main body 2 along the vertical direction, a pair of leg gathers 3 and a pair of roadway walls 20, a pair of belts 4 along the horizontal direction, and a waistline opening WH. And a pair of leg-hole openings LH. In the pants-type diaper 1 (FIG. 1), one end portion in the longitudinal direction of the absorbent main body 2 is located above the front, and the other longitudinal direction of the absorbent main body 2 is located above the rear via the wearer's inseam. The end is located. The pair of leg gathers 3 is provided on both lateral sides of the absorbent main body 2.

  2A, the longitudinal directions of the absorbent main body 2, the pair of leg gathers 3 and the pair of belts 4 are aligned, and the skin of the absorbent main body 2 and the pair of leg gathers 3 is aligned. The pair of belt portions 4 overlaps the side surfaces, and the pair of leg gather portions 3 and the pair of belt portions 4 extend in the longitudinal direction. In the diaper 1 in a flat state, the absorbent main body is formed by opening the lateral inner ends 4b of the pair of belt portions 4 outwardly in the lateral direction and folding the pair of belt portions 4 in the center in the longitudinal direction. The diaper 1 (FIG. 1) in a pants-type state is obtained by folding the two and the pair of leg gathers 3 in two at the longitudinal center.

  In the absorptive main body 2, as shown in FIG. 2B, in order from the skin side in the thickness direction (the side in contact with the wearer), the liquid-permeable sheet 5 (for example, a nonwoven fabric or the like), the absorbent body 6, and the liquid-impermeable. The sheet 7 (for example, a polyethylene (PE) film, a polypropylene (PP) film, etc.) and the exterior sheet 8 (for example, a nonwoven fabric etc.) have overlapped.

  The absorbent body 6 includes an absorbent core 61 that absorbs liquid and a core wrap sheet 62 that covers the outer peripheral surface of the absorbent core 61. The absorbent core 61 is formed by molding a liquid absorbent material into a predetermined shape. In this embodiment, the absorbent core 61 has a substantially rectangular shape with curved ends in the longitudinal direction. As a liquid absorptive material, liquid absorptive granular materials, such as liquid absorptive fibers, such as pulp fiber, and superabsorbent polymer (what is called SAP) can be illustrated. Examples of the core wrap sheet 62 include liquid permeable sheets such as tissue paper and nonwoven fabric. The absorbent core 61 may not be covered with the core wrap sheet 62.

  The leg gather part 3 and the belt part 4 have elasticity. Specifically, a plurality of thread-like elastic members 3 a (for example, rubber thread) that can be expanded and contracted in the vertical direction are arranged in the leg gather portion 3 side by side in the horizontal direction. In the belt portion 4, a plurality of thread-like elastic members 4 a (for example, rubber thread) that can be expanded and contracted in the horizontal direction are arranged side by side in the vertical direction. A leg-hole elastic sheet 9 is provided along the leg-hole opening LH. Therefore, the diaper 1 fits around the wearer's waist and legs. In addition, as the leg elastic sheet 9, a so-called gear stretching process is applied to a non-woven fabric having substantially elastic elastomer fibers such as polyurethane elastomers and substantially non-elastic thermoplastic resin fibers such as polyolefin resins. However, the present invention is not limited to this.

  The pair of leak-proof wall portions 20 are provided on both lateral sides of the absorbent main body 2. More specifically, the pair of leak-proof wall portions 20 are located on the inner side in the lateral direction than the pair of leg gathers 3. It is provided on both sides. The leak-proof wall portion 20 includes a thread-like elastic member 21 that can expand and contract in the longitudinal direction and a leak-proof wall portion sheet 22. The thread-like elastic member 21 is fixed to the leak-proof wall portion sheet 22 in a stretched state, and in the natural state diaper 1, the leak-proof wall portion 20 is caused to contract by the contraction of the thread-like elastic member 21, that is, the skin side surface of the absorbent main body 2. Stands on the wearer side from the sex sheet 5. Examples of the thread-like elastic member 21 include thread-like polyurethane stretchable fibers and natural rubber. The sheet 22 for the leak-proof wall is preferably a liquid-impervious sheet such as a nonwoven fabric or a plastic film formed of hydrophobic fibers, and is liquid-impervious spunbond nonwoven fabric or SMS nonwoven fabric (spunbond, meltblown, Spunbond nonwoven fabric) can be exemplified.

  At the upper end portion in front of the diaper 1, the lateral side end of the absorbent main body 2, the upper end of the leak-proof wall portion 20, and the upper end of the leg gather portion 3 are the longitudinal ends of the belt portion 4 at the pair of first joint portions 51. It is joined to one end in the direction. At the upper end portion behind the diaper 1, the lateral side end of the absorbent main body 2, the upper end of the leak-proof wall portion 20, and the upper end of the leg gather portion 3 are the longitudinal ends of the belt portion 4 at the pair of second joint portions 52. It is joined to the other end in the direction. The pair of first joint portions 51 are inclined outward in the lateral direction from the upper side in the vertical direction (specifically, from the lateral center of the waistline opening WH) toward the pair of leg-hole openings LH. The pair of second joint portions 52 are similarly inclined. In addition, as a joining method in the 1st junction part 51 and the 2nd junction part 52, well-known joining methods, such as an adhesive agent, a heat seal, an ultrasonic seal, these, etc., can be illustrated, for example.

=== Production Method of Diaper 1 ===
4-8 is explanatory drawing of the manufacturing method of the diaper 1. FIG. 4A, FIG. 5A, FIG. 6A and FIG. 7A are plan views of the diaper 1 being manufactured as viewed from the skin side in the thickness direction, and FIGS. 4B, 5B, 6B and 7B are diapers being manufactured. FIG. In the present embodiment, as shown in FIG. 8, it is assumed that a plurality of diapers 1 are continuously manufactured while the material of the diaper 1 is conveyed in the MD direction, but only the single diaper 1 is shown in FIGS. 4 to 7. .

  In the manufacturing process of the leak-proof wall part 20, a pair of leak-proof wall part 20 is manufactured from the base material 23 of the sheet | seat 22 for leak-proof wall parts. Therefore, first, as shown in FIG. 4, the three thread-like elastic members 21 are fixed in an extended state in the longitudinal direction of the base material 23 on both lateral sides of the base material 23 of the sheet 22 for leak-proof wall. The The number of thread-like elastic members 21 is not limited to three. In FIG. 4 and other drawings, only the part of the thread-like elastic member 21 fixed in the stretched state, that is, the part of the thread-like elastic member 21 that exhibits stretchability in the longitudinal direction is shown. Then, both sides in the lateral direction of the base material 23 on which the three thread-like elastic members 21 are arranged are folded back to the skin side (upper surface side) in the thickness direction inside the lateral direction and fixed with an adhesive (not shown). Is done. Then, the 1st adhesive agent 31 is each apply | coated to the inner side of the horizontal direction of the both sides turned up. As shown in FIG. 4A, the first adhesive 31 is applied to both ends of the base material 23 in the longitudinal direction.

  Thereafter, both side portions of the base material 23 in the horizontal direction are folded back to the skin side in the thickness direction inside the horizontal direction again, as shown in FIG. The portion of the base material 23 that is folded back becomes the upper layer portion 24 of the leak-proof wall portion 20. Therefore, the thread-like elastic member 21 is provided in the upper layer portion 24. And the site | part of the base material 23 of the non-skin side of the thickness direction rather than the upper layer part 24 becomes the lower layer part 25 of the leak-proof wall part 20. FIG. Specifically, as shown in FIG. 6B, the lower layer portion 25 extends from the lateral inner end of the upper layer portion 24 to the lateral end 6 b of the absorbent body 6. The upper layer portion 24 is fixed in a state of being depressed toward the lower layer portion 25 by the first adhesive 31 at both ends in the longitudinal direction of the base material 23. And the base material 23 is cut | disconnected by the center CL1 of the horizontal direction. As shown in FIG. 6B, the cut portion of the laterally right side base material 23 becomes the leakage preventing wall portion 20A on the left side in the lateral direction, and the cut portion of the laterally left side base material 23 becomes the laterally right side barrier member. It becomes the leak wall part 20B.

  A pair of leak-proof wall part 20 (20A, 20B) is arrange | positioned at intervals at the horizontal direction, and the 2nd adhesive agent 32 and the 3rd adhesive agent 33 are apply | coated to the non-skin side surface of each sheet | seat 22 for leak-proof wall parts. Is done. The position of the second adhesive 32 in the lateral direction is a position overlapping with the absorbent body 6 to be joined later in the thickness direction, and the position of the second adhesive 32 in the longitudinal direction is the same as the position of the first adhesive 31, that is, leakage prevention. It is the both ends of the longitudinal direction of the sheet | seat 22 for walls. The position of the third adhesive 33 in the horizontal direction is a position on the outer side of the absorbent body 6 in the horizontal direction, and the third adhesive 33 is applied over the entire area in the longitudinal direction of the leakage preventing wall portion sheet 22. And the liquid-permeable sheet 5 merges from the non-skin side surface side of a pair of leak-proof wall part 20, and a pair of leak-proof wall part 20 and the liquid-permeable sheet 5 are the 2nd adhesive agent 32 and the 3rd adhesive agent 33. To integrate.

  The sheet 22 for leak-proof wall extends to the outside in the lateral direction from the liquid-permeable sheet 5, and both sheets 5, of the non-skin side surfaces of the liquid-permeable sheet 5 and the sheet 22 for leak-proof wall. The fourth adhesive 34 is applied to the boundary portion 22. The fourth adhesive 34 is applied over the entire area in the longitudinal direction of the leak-proof wall portion sheet 22. And the absorber 6 merges from the non-skin side surface side of the liquid permeable sheet 5, and the liquid permeable sheet 5 is applied by an adhesive (not shown) applied to the lateral center of the non-skin side surface of the liquid permeable sheet 5. And the absorber 6 are integrated.

  Thereafter, as shown in FIG. 7, the lateral side portions of the liquid-permeable sheet 5 and the leak-proof wall portion sheet 22 are respectively non-skinned on the inner side in the lateral direction at the lateral side edge 6 b of the absorbent body 6. And is fixed to the non-skin side surface of the absorbent body 6 by the fourth adhesive 34. In other words, the absorbent body 6 is rolled up by the liquid-permeable sheet 5 and the leak-proof wall portion sheet 22. In addition, as the first adhesive 31 to the fourth adhesive 34, a hot melt adhesive can be exemplified, and as the application pattern, a known application pattern such as a spiral pattern, a stripe pattern, or solid coating can be exemplified.

  In the diaper 1 of the present embodiment, it is assumed that the pair of leg gathers 3 and the pair of belts 4 are formed from a pair of sheet members 10. In the sheet member 10, as shown in FIG. 3B, two sheets 11, 11 such as non-woven fabrics are stacked in the thickness direction, and a thread-like elastic member 3 a for the leg gather part 3 and a thread-like elasticity for the belt part 4 therebetween. The member 4a and the leg-hole elastic sheet 9 are fixed in a state of extending in the longitudinal direction. In addition, since the edge part of the horizontal direction outer side of the sheet | seat member 10 is turned twice inside in the horizontal direction, the stress concerning a waist part part at the time of wear is reduced. Such a pair of sheet members 10 is manufactured in a process (not shown) different from the process of manufacturing the leak-proof wall portion 20. The manufactured pair of sheet members 10 are arranged at intervals in the lateral direction. Then, the liquid-impermeable sheet 7 and the exterior sheet 8 merge from the non-skin side surfaces of the pair of sheet members 10, and the pair of sheet members 10, the liquid-impermeable sheet 7, and the exterior sheet 8 are bonded by an adhesive (not shown). Are integrated.

  Thereafter, as shown in FIG. 8, the non-skin side surface side of the base material in which the absorbent body 6 (absorbent core 61) is entrained with the liquid-permeable sheet 5 (continuous sheet) and the leak-proof wall portion sheet 22 (continuous sheet). The pair of sheet members 10 (continuous sheet), the liquid-impermeable sheet 7 (continuous sheet), and the exterior sheet 8 (continuous sheet) join together, and the members are integrated by an adhesive (not shown). Thus, the liquid permeable sheet 5, the absorbent body 6, the liquid impermeable sheet 7, and the exterior sheet 8 are laminated to form the absorbent main body 2. Moreover, the edge part of the horizontal direction inner side of a pair of sheet | seat member 10 will be joined between the sheet | seat 22 for roadway wall parts, and the liquid-impermeable sheet | seat 7 as shown to FIG. 3B. 8 corresponds to the longitudinal direction of FIG. 2A, and the CD direction orthogonal to the MD direction corresponds to the lateral direction of FIG. 2A. Then, the hole LH ′ for the leg-hole opening is punched out in a portion of the sheet member 10 where the leg-hole elastic sheet 9 exists. Therefore, the leg-holes elastic sheet 9 exists over the entire circumference along the leg-hole openings LH. The state of the diaper 1 at this time is the state shown in FIG.

  Thereafter, the laterally outer end portion of the sheet member 10 is folded back to the inner side in the lateral direction along a folding line FL extending in the MD direction passing through the hole LH ′ for the leg opening. The portion of the sheet member 10 that is folded back becomes the belt portion 4, and the portion of the sheet member 10 that is aligned laterally with the absorber 6 and the like becomes the leg gather portion 3. And the absorptive main body 2, the leg gather part 3, the belt part 4, and the leak-proof wall part 20 are joined by a pair of 1st junction 51 parts and a pair of 2nd junction 52 parts. Thereafter, the base material is cut for each individual diaper 1, and the four corners of the rectangle are cut along the first joint portion 51 and the second joint portion 52. Thereby, the diaper 1 of the planar state shown to FIG. 2A is manufactured.

=== Fixing portion 40 of leak-proof wall portion 20 and leg-hole elastic sheet 9 ===
FIG. 9 is an explanatory view of the fixing portion 40 of the leak-proof wall portion 20 and the leg-hole elastic sheet 9, and is a diagram in which the diaper 1 in the state of FIG. 2A is developed. In the diaper 1 of this embodiment, on the front side (abdominal side) and the back side (back side) in the pants-type state, the upper ends in the vertical direction of the pair of leak-proof wall portions 20 are the skin of the absorbent main body 2. A pair of fixing portions 40 that are fixed in a state where the side surfaces, that is, the skin side surfaces of the liquid permeable sheet 5 are turned down, are provided.

  As described above, in the leak-proof wall portion 20 of the present embodiment, the leak-proof wall portion sheet 22 is arranged on the skin side surface side of the liquid-permeable sheet 5 on the lateral side edge 6 b of the absorbent body 6. It is folded back. The folded portion, that is, the end portion (so-called free end portion) of the leakage preventing wall portion sheet 22 in the lateral direction is further folded on the skin side surface of the liquid permeable sheet 5 as shown in FIG. The lower layer portion 25 and the upper layer portion 24 are formed by folding back to the skin side outward in the lateral direction at the position P1. Therefore, the fixing part 40 is fixed with the first fixing part 41 that fixes the lower layer part 25 in a state where the lower layer part 25 is turned down toward the skin side surface of the liquid-permeable sheet 5 and the upper layer part 24 that is turned down toward the lower layer part 25. And a second fixing portion 42. As shown in FIG. 6A, the first fixing portion 41 is a portion where the second adhesive 32 is applied at both ends in the longitudinal direction of the lower layer portion 25. Further, as shown in FIG. 5A, the portions where the first adhesive 31 is applied, which are both ends in the longitudinal direction of the upper layer portion 24, become the second fixing portion 42. That is, the fixing part 40 is a part to which at least one of the first adhesive 31 and the second adhesive 32 is applied.

  In addition, although the 1st adhesive agent 31 and the 2nd adhesive agent 32 are apply | coated to the rectangular shape in the middle of manufacture, after formation of the 1st junction part 51 and the 2nd junction part 52, the four corners of the rectangular diaper in the middle of manufacture are It is cut (see FIG. 8). Therefore, the 1st fixing | fixed part 41 and the 2nd fixing | fixed part 42 become trapezoid shape as shown in FIG. Further, the leak-proof wall portion 20 is not limited to being fixed to the liquid-permeable sheet 5 with an adhesive, and may be fixed by a known method such as an adhesive tape, heat seal, ultrasonic seal, and the like.

  Further, the lower layer portion 25 is not fixed to the liquid-permeable sheet 5 at the lower end portion in the vertical direction of the leak-proof wall portion 20, that is, the portion contacting the wearer's crotch portion, and the upper layer portion 24 is not attached to the lower layer portion 25. It is not fixed. Therefore, the upper layer part 24 and the lower layer part 25 can stand up on the skin side to block excrement.

  In the diaper 1 of the present embodiment, the longitudinal ends of the stretchable belt portion 4 and the leak-proof wall portion 20 are joined at the first joint portion 51 and the second joint portion 52. For this reason, the force applied to the belt portion 4 is concentrated on the first joint portion 52 and the second joint portion 52 so as to easily act on the leak-proof wall portion 20. However, as described above, in the diaper 1 of the present embodiment, the vertical upper end portion of the leak-proof wall portion 20 is fixed to the skin side surface of the liquid-permeable sheet 5 by the fixing portion 40. Therefore, the stretchability (thread-like elastic member 4a) of the belt portion 4 and the stretchability (thread-like elastic member 21) of the leak-proof wall portion 20 do not act in series and do not affect each other. That is, the leak-proof wall portion 20 hardly receives the force from the belt portion 4 and acts independently. For example, it is possible to prevent the leak-proof wall portion 20 from being pulled obliquely upward by the belt portion 4 pulled up obliquely upward when the diaper 1 is mounted. As a result, it is possible to prevent the leak-proof wall portion 20 from spreading laterally outward and falling down, or causing the leak-proof wall portion 20 in the vicinity of the first joint portion 51 and the second joint portion 52 to rise unnecessarily. Therefore, it is difficult for a gap to occur between the leak-proof wall portion 20 and the wearer's body, and the leak-proof wall portion 20 is appropriately in close contact with the wearer, so excrement can be dammed by the leak-proof wall portion 20. . In addition, even when the diaper 1 is worn, it is possible to prevent the leak-proof wall portion 20 from interlocking with the movement of the wearer around the waist, that is, the movement of the belt portion 4, thereby generating a gap. Therefore, the appropriate close contact state of the leak-proof wall portion 20 is maintained. As mentioned above, according to the diaper 1 of this embodiment, the leak-proof wall part 20 acts appropriately and can suppress the leakage of excrement.

  Moreover, a part of the fixing portion 40 overlaps the absorbent core 61 in the thickness direction in the vertical direction and the horizontal direction. Specifically, as shown in FIG. 9, the end of the fixing portion 40 on the center side in the longitudinal direction (downward in the vertical direction) overlaps the absorbent core 61 over the entire region in the horizontal direction. The absorbent core 61 has high rigidity and is hardly affected by the movement of the belt portion 4. Therefore, by fixing the leak-proof wall portion 20 in the region of the absorbent main body 2 where the absorbent core 61 is present, the leak-proof wall portion 20 becomes more difficult to interlock with the movement of the belt portion 4. Therefore, the leak-proof wall part 20 can be made to act appropriately and the excrement leakage can be suppressed more reliably.

  In addition, if the upper layer part 24 and the lower layer part 25 of the leak-proof wall part 20 are not only fixed to the absorptive main body 2 over the whole area of a horizontal direction by the fixing | fixed part 40, but if the part of the horizontal direction is also fixed, the above The effect is obtained. In the diaper 1 of the present embodiment, the inner end 40a in the horizontal direction of the fixed portion 40 is positioned more outward in the horizontal direction than the inner end 20a in the horizontal direction of the leak-proof wall portion 20. That is, the first adhesive 31 and the second adhesive 32 are not applied to the lateral inner end 20a of the leak-proof wall portion 20, and the lateral inner end portion of the leak-proof wall portion 20 is not fixed. By doing so, the leak-proof wall part 20 can be smoothly erected from the part where the leak-proof wall part 20 is fixed to the part where it is not fixed toward the lower side in the vertical direction. The part 20 becomes easy to stand up. Therefore, the leak-proof wall part 20 can be made to act appropriately, and excrement leakage can be suppressed.

  Further, the end (lower end) 40b on the center side in the longitudinal direction of the fixed portion 40 is longer than the ends (lower ends) 51a and 52a on the center side in the longitudinal direction of the first joint portion 51 or the second joint portion 52, as shown in FIG. Is also located on the center side in the longitudinal direction (lower side in the longitudinal direction). As described above, the first joining portion 51 and the second joining portion 52 are strongly subjected to the force due to the extension of the belt portion 4. Therefore, the site | part of the leak-proof wall part 20 which exists between a pair of 1st junction parts 51 and between a pair of 2nd junction parts 52 tends to receive the force from the belt part 4. FIG. Therefore, by extending the fixing part 40 to the longitudinal direction center side (downward side) from the first joint part 51 and the second joint part 52, the leak-proof wall part 20 becomes more difficult to interlock with the movement of the belt part 4, The leak-proof wall part 20 can be made to act appropriately.

  Between the pair of first joint portions 51 and between the pair of second joint portions 52, wrinkles are likely to occur due to expansion and contraction of the belt portion 4. In particular, wrinkles are likely to occur in the region of only the sheet where the absorbent core 61 does not exist. Further, wrinkles may occur in the area of the sheet alone even when the leak-proof wall portion 20 rises. Therefore, as described above, the fixing portion 40 is extended to the center side (downward side) in the longitudinal direction from the first joint portion 51 or the second joint portion 52, and between the pair of first joint portions 51 and the pair of second joint portions 52. It is advisable not to erect the leak-proof wall portion 20 between them. By doing so, the generation of wrinkles due to the standing of the leak-proof wall portion 20 between the pair of first joint portions 51 and the pair of second joint portions 52 is prevented, and the generation of wrinkles due to expansion and contraction of the belt portion 4 is promoted. Can be prevented. Therefore, generation | occurrence | production of a wrinkle is suppressed as much as possible, and the external appearance of the diaper 1 can be improved.

  In addition, the end (upper end) 40c on the outer side in the longitudinal direction of the fixed portion 40 is positioned on the outer side in the longitudinal direction (upward in the longitudinal direction) than the end (upper end) 61a on the outer side in the longitudinal direction of the absorbent core 61. Furthermore, the end 40c on the outer side in the longitudinal direction of the fixed portion 40 reaches the first joint portion 51 and the second joint portion 52 in the longitudinal direction. In this way, between the pair of first joint portions 51 and the pair of second joint portions 52 that easily receive the force from the belt portion 4, the fixing portion 40 is extended over a wider range in the longitudinal direction, and the leak-proof wall portion 20. May be fixed to the absorbent main body 2. By doing so, it becomes difficult for the leak-proof wall part 20 to interlock | cooperate further with the motion of the belt part 4, and the leak-proof wall part 20 can be made to act appropriately.

  By extending the fixing portion 40 to the outer side in the longitudinal direction (upper side) than the absorbent core 61, the layer of the leakproof wall portion sheet 22 is formed in a flexible region made of the sheet on the outer side in the longitudinal direction from the absorbent core 61. The layer of the 1st adhesive agent 31 and the 2nd adhesive agent 32 is added, and rigidity increases. Therefore, generation | occurrence | production of a wrinkle is suppressed as much as possible between a pair of 1st junction parts 51 and a pair of 2nd junction part 52 which are easy to produce a wrinkle with the force from the belt part 4, and the external appearance of the diaper 1 can be improved. . However, not limited to the above, the fixing portion 40 does not extend below the first and second joining portions 51 and 52, does not extend above the upper end 61a of the absorbent core 61, or the first and first The two joint portions 51 and 52 may not be reached.

  Further, a portion (so-called fixed end portion) of the leakage preventing wall portion sheet 22 that is folded back to the non-skin side surface of the absorbent body 6 on the inner side in the lateral direction at the lateral side end 6b of the absorbent body 6 is a leakage prevention wall. The fourth adhesive 34 (see FIG. 6 and FIG. 7) applied along the longitudinal direction of the portion 20 is fixed to the non-skin side surface of the absorbent body 6. The fixed end portion of the leak-proof wall portion sheet 22 serves as an upright fulcrum of the leak-proof wall portion 20. Therefore, compared to the case where the fixed end portion of the leak-proof wall portion sheet 22 is fixed to, for example, the leg gather portion 3 made of a sheet material, the absorbent body 6 (particularly the portion where the absorbent core 61 is present) having high rigidity is used. By fixing, it becomes difficult for the leak-proof wall part 20 to interlock | cooperate with a motion of a wearer's leg, and the standing of the leak-proof wall part 20 is stabilized. Therefore, the appropriate contact | adherence state of the leak-proof wall part 20 is maintained, and the leakage of excrement can be suppressed.

  Further, the fixed end portion of the leak-proof wall portion sheet 22 and the non-skin side surface of the absorbent body 6 are fixed to the liquid-impermeable sheet 7 and the leg gather portion 3 by a fifth adhesive 35 as shown in FIG. 3B. ing. The fifth adhesive 35 is located on the inner side in the lateral direction with respect to the lateral end 6 b of the absorbent body 6. Therefore, the laterally outer end portion of the fixed end portion of the leak-proof wall portion sheet 22, that is, the lateral end portion of the absorbent body 6 is not fixed to the leg gather portion 3. Therefore, it is possible to prevent the lateral end portion of the absorbent body 6 from interlocking with the movement of the leg gather portion 3, that is, the movement of the wearer's leg, and the lateral end portion of the absorbent body 6 is deformed or lifted. Can be suppressed. Therefore, the standing of the leak-proof wall part 20 is stabilized, the appropriate close contact state of the leak-proof wall part 20 is maintained, and the leakage of excrement can be suppressed.

  Further, the portion of the thread-like elastic member 21 for the leak-proof wall portion 20 that exhibits stretchability, that is, the portion of the thread-like elastic member 21 that is fixed to the leak-proof wall portion sheet 22 in a stretched state in the longitudinal direction is shown in FIG. As shown in FIG. 2, the first joint 51 and the second joint 52 are not reached. By doing so, it is possible to more reliably prevent the stretchability (thread-like elastic member 4a) of the belt portion 4 and the stretchability (thread-like elastic member 21) of the leak-proof wall portion 20 from acting in series. The leakage wall part 20 can be made to act independently from the belt part 4, and the leakage of excrement can be suppressed.

  As described above, in the diaper 1 of the present embodiment, the leak-proof wall portion 20 that stands on the skin side by the thread-like elastic member 21 is a line that is in contact with the crotch portion of the wearer, that is, below the pants-type diaper 1. In close contact with the wearer's body, leakage of excrement can be suppressed. On the other hand, a leg-hole elastic sheet 9 is provided on the periphery of the leg-hole opening LH formed in the leg gather part 3 and the belt part 4. Even by providing the diaper 1 with the thread-like elastic member 3a for the leg gathers 3, the diaper 1 can be closely attached to the wearer's leg. However, by providing the leg-holes elastic sheet 9 on the diaper 1, the diaper 1 is in close contact with the legs of the wearer on the surface by the leg-holes elastic sheet 9. Therefore, the periphery of the leg opening LH can easily follow the movement of the wearer's leg, and the leakage of excrement can be more reliably suppressed. Thus, in the diaper 1 of this embodiment, the leakage prevention wall part 20 and the leg-holes elastic sheet 9 can double suppress the leakage of excrement.

  The leg opening LH is formed by the lateral side end of the leg gather portion 3 and the lower end of the belt portion 4. Therefore, the thread-like elastic member 21 for the leak-proof wall portion 20 does not reach the first joint portion 51 and the second joint portion 52, whereas the leg-hole elastic sheet 9 has the first joint portion 51 and the second joint portion. The leg gathering part 3 and the belt part 4 are provided across the 52. By doing so, the leg-holes elastic sheet 9 can be provided along the periphery of the leg-hole opening LH. In this embodiment, the leg-holes elastic sheet 9 is provided over the entire periphery of the periphery of the leg-hole opening LH. However, the present invention is not limited thereto, and the leg-hole elastic sheet 9 may be provided only at a part of the periphery of the leg-hole opening LH. The leg elastic sheet 9 may not be provided on the diaper 1.

  Further, as shown in FIG. 9, the width of the leg-hole elastic sheet 9 located between the first joint portion 51 and the second joint portion 52 in the longitudinal direction is constant, whereas the width for the leg-hole opening portion is constant. The width of the hole LH ′ increases from the outside in the longitudinal direction toward the center. Therefore, in the leg-holes elastic sheet 9 provided in the leg gather portion 3, the lateral length on the outer side in the longitudinal direction (for example, L1 in FIG. 9) is compared with the lateral length on the central side in the longitudinal direction (for example, L1 in FIG. 9). For example, L2) in FIG. 9 is longer. In other words, in the diaper 1 in a pants-type state, the length of the leg-hole elastic sheet 9 in the horizontal direction is longer on the upper side than on the lower side in the vertical direction. Therefore, at the part on the lower side in the longitudinal direction of the diaper 1, that is, the part corresponding to the crotch part of the wearer, the leg-hole elastic sheet 9 is supported while supporting the leak-proof wall part 20 with the leg-holes elastic sheet 9 that is in close contact with the wearer. By narrowing the width of the leg, the slack of the leg-holes elastic sheet 9 can be suppressed even at the crotch portion sandwiched between the thighs. In addition, in the diaper 1 provided with the leak-proof wall part 20, the site | part in which the leg-holes elastic sheet 9 was provided also stood | stands up with the standing-up of the leak-proof wall part 20. FIG. Also from this point, it can be said that the slack of the leg-holes elastic sheet 9 in the crotch part can be suppressed. On the other hand, the part of the diaper 1 on the upper side in the vertical direction hits the buttocks (V-shaped part) of the wearer, that is, the part where the body is likely to be depressed. Therefore, on the upper side in the vertical direction of the diaper 1, the wide leg-hole elastic sheet 9 is firmly brought into close contact with the wearer, so that a gap is hardly generated, and excrement leakage can be suppressed. However, the present invention is not limited to the above, and for example, the lateral length of the leg-hole elastic sheet 9 may be the same between the lower side and the upper side in the vertical direction.

  Further, at the central portion in the longitudinal direction (lower side in the longitudinal direction), the lateral length of the lower layer portion 25 of the leak-proof wall portion 20 is set in the lateral direction of the leg elastic sheet 9 provided in the leg gather portion 3. It is better to set it to the same length as the length. By doing so, the height of the leak-proof wall portion 20 standing up with respect to the crotch portion of the wearer and the height of the edge portion of the leg-hole opening LH provided with the leg-hole elastic sheet 9 can be made substantially the same, Both can stand up in good balance. Therefore, one of the leak-proof wall portion 20 and the leg-hole elastic sheet 9 is in close contact with the wearer, but the other is not in close contact with the gap, so that a gap is prevented from being generated, and excrement leakage can be suppressed.

=== Other Embodiments ===
In the above-described embodiment, the leak-proof wall portion 20 has a two-layer structure, but is not limited thereto, and may have a one-layer structure, for example. Moreover, the sheet 22 for leak-proof wall part entrains the side end of the absorber 6, and is fixed to the non-skin side surface of the absorber 6, but it is not limited to this, for example, the fixed end part of the sheet 22 for leak-proof wall part It may be fixed to the leg gather part 3.

  In the above embodiment, by folding the sheet member 10, a part of the sheet member 10 is the leg gather part 3 and the remaining part of the sheet member 10 is the belt part 4, but the leg gather part 3 and the belt part 4 May be formed from different sheet members.

  The absorbent article according to the present invention may be, for example, a nursing diaper or an infant diaper. Moreover, you may utilize not only as a diaper but as sanitary goods, for example.

  As mentioned above, said embodiment is for making an understanding of this invention easy, and is not for limiting and interpreting this invention. The present invention can be changed and improved without departing from the gist thereof, and it is needless to say that the present invention includes equivalents thereof.

DESCRIPTION OF SYMBOLS 1 Diaper (absorbent article), 2 absorbent main body, 3 leg gather part, 3a thread-like elastic member, 4 belt part, 4a thread-like elastic member, 5 liquid permeable sheet, 6 absorber, 61 absorbent core, 62 core wrap Sheet, 7 Liquid-impermeable sheet, 8 Exterior sheet, 9 Leg-hole elastic sheet (sheet-like elastic member), 10 Sheet member, 11 Sheet, 20 Leak-proof wall part, 21 Thread-like elastic member, 22 Sheet for leak-proof wall part , 23 base material, 24 upper layer part, 25 lower layer part, 31 first adhesive, 32 second adhesive, 33 third adhesive, 34 fourth adhesive, 35 fifth adhesive, 40 fixing part, 41 first Fixed part, 42 2nd fixed part, 51 1st junction part (joint part), 52 2nd junction part (joint part), WH waist circumference opening part, LH leg circumference opening part

Claims (9)

An absorbent article having a longitudinal direction, a lateral direction, and a front-rear direction, and having an absorbent main body along the longitudinal direction, a stretchable belt portion along the lateral direction, and a pair of leg hole openings. Because
The absorbent body has an absorbent core for absorbing liquid;
On both sides in the lateral direction of the absorbent main body, a pair of leak-proof wall portions standing from the skin side surface of the absorbent main body is provided,
A pair of joints that incline outward in the lateral direction from the upper side in the vertical direction toward each of the pair of leg openings, and join at least the absorbent main body, the belt part, and the leak-proof wall part. Parts are provided on the front and rear sides in the front-rear direction,
A pair of fixing portions for fixing the upper end portions in the vertical direction of the pair of leak-proof wall portions in a state where the upper end portions are inclined toward the skin side surface of the absorbent main body are provided on the front side and the rear side, respectively.
In the vertical direction and the horizontal direction, at least a part of the fixing portion overlaps the thickness direction of the absorbent core and the absorbent core ,
In the longitudinal direction, the lower end of the fixed part is located below the lower end of the joint part . The absorbent article according to claim 1 ,
In the longitudinal direction, the upper end of the fixing portion is located above the upper end of the absorbent core. The absorbent article according to claim 2 ,
An absorbent article characterized in that, in the longitudinal direction, an upper end of the fixed portion reaches the joint portion. An absorbent article having a longitudinal direction, a lateral direction, and a front-rear direction, and having an absorbent main body along the longitudinal direction, a stretchable belt portion along the lateral direction, and a pair of leg hole openings. Because
The absorbent body has an absorbent core for absorbing liquid;
On both sides in the lateral direction of the absorbent main body, a pair of leak-proof wall portions standing from the skin side surface of the absorbent main body is provided,
A pair of joints that incline outward in the lateral direction from the upper side in the vertical direction toward each of the pair of leg openings, and join at least the absorbent main body, the belt part, and the leak-proof wall part. Parts are provided on the front and rear sides in the front-rear direction,
A pair of fixing portions for fixing the upper end portions in the vertical direction of the pair of leak-proof wall portions in a state where the upper end portions are inclined toward the skin side surface of the absorbent main body are provided on the front side and the rear side, respectively.
In the vertical direction and the horizontal direction, at least a part of the fixing portion overlaps the thickness direction of the absorbent core and the absorbent core,
The absorbent article according to claim 1, wherein an inner end in the horizontal direction of the fixing portion is located on an outer side in the horizontal direction with respect to an inner end in the horizontal direction of the leak-proof wall portion. The absorbent article according to any one of claims 1 to 4 , wherein
The leak-proof wall portion has a thread-like elastic member that can expand and contract in the longitudinal direction thereof, and a leak-proof wall portion sheet,
The portion of the leakproof wall portion sheet that stands up in the lateral direction is folded back to the skin side outward in the lateral direction on the skin side surface of the absorbent main body, and has a lower layer portion and an upper layer portion. And
The upper elastic layer is provided with the thread-like elastic member,
The fixing portion includes a first fixing portion that fixes the lower layer portion in a state where the lower layer portion is turned down toward the skin side surface of the absorbent main body, and a second fixing that fixes the upper layer portion in a state that the upper layer portion is turned down toward the lower layer portion. And an absorbent article. The absorbent article according to any one of claims 1 to 5 ,
The leak-proof wall portion has a thread-like elastic member that can expand and contract in the longitudinal direction thereof, and a leak-proof wall portion sheet,
An absorbent article characterized in that, in the longitudinal direction, a portion that exhibits stretchability in the thread-like elastic member does not reach the joint. An absorbent article having a longitudinal direction, a lateral direction, and a front-rear direction, and having an absorbent main body along the longitudinal direction, a stretchable belt portion along the lateral direction, and a pair of leg hole openings. Because
The absorbent body has an absorbent core for absorbing liquid;
On both sides in the lateral direction of the absorbent main body, a pair of leak-proof wall portions standing from the skin side surface of the absorbent main body is provided,
A pair of joints that incline outward in the lateral direction from the upper side in the vertical direction toward each of the pair of leg openings, and join at least the absorbent main body, the belt part, and the leak-proof wall part. Parts are provided on the front and rear sides in the front-rear direction,
A pair of fixing portions for fixing the upper end portions in the vertical direction of the pair of leak-proof wall portions in a state where the upper end portions are inclined toward the skin side surface of the absorbent main body are provided on the front side and the rear side, respectively.
In the vertical direction and the horizontal direction, at least a part of the fixing portion overlaps the thickness direction of the absorbent core and the absorbent core,
A pair of leg gathers along the longitudinal direction is provided on both lateral sides of the absorbent main body,
An absorbent article, characterized in that a sheet-like elastic member along the periphery of the leg opening is provided in the belt part and the leg gather part. The absorbent article according to claim 7 ,
The absorbent article according to claim 1, wherein a length of the sheet-like elastic member in the lateral direction is longer on an upper side than on a lower side in the longitudinal direction. The absorbent article according to any one of claims 1 to 8 ,
The absorbent main body has an absorbent body in which the absorbent core is covered with a core wrap sheet,
The leak-proof wall portion has a thread-like elastic member that can expand and contract in the longitudinal direction thereof, and a leak-proof wall portion sheet,
The leakage preventing wall portion sheet is folded back to the skin side surface of the absorbent main body at the lateral end of the absorbent body, and is also folded to the non-skin side surface of the absorbent body.
The portion of the sheet for leak-proof wall portion that is folded back to the non-skin side surface of the absorber is fixed to the non-skin side surface of the absorber along the longitudinal direction of the leak-proof wall portion. Absorbent article.

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